Built up roofing bur.
Roof insulation life expectancy.
Fiberglass insulation can potentially last 80 to 100 years if it is undamaged but bits can start to fall from fiberglass batts after 15 or 20 years.
Affordability and insulation qualities are major reasons why foam roofing has rapidly become popular in just under 30 years.
For the most part maintaining attic insulation is pretty easy.
If kept dry undamaged and away from uv rays all of these insulating materials have a lifespan of 100 years or more effectively the life of the house.
A properly insulated attic keeps the home warm keeps energy bills low and protects the roof and home during a heavy snowfall.
Cellulose insulation can last for decades fiberglass insulation up to 100 years and spray foam could outlast your home.
Life span of various insulation types.
Housewrap wrap tape and spray foam last 80 or more years while loose fill foamboard cellulose fiberglass rock wool and loose fill all last 100 years or more.